include spdx version information

[armijnhemel]

Description

The scancode results do not specify which SPDX version the license identifiers are from. It would be nice to include this.

[pombredanne]

@armijnhemel this makes sense. Where would see this? in the scan headers? Or with each license data?

[armijnhemel]

I would say scan headers.

[pombredanne]

This is now included in JSON scan headers as:

        extra_data:
            spdx_license_list_version: '3.19'